Car-roof



F. M. WHYTE.

CAR ROOF.

APPLICATION FILED DEC-6. 1917.

1,370,571 Patented Mar. 8, 1921.

Qwumdoz 21 2,1 1mm... #444 Fir/m UNITED STATES PATENT OFFICE.

FREDERICK M. WHYTE, OF TARRYTOWN, NEW YORK, ASSIGNOR TO HUTCI-IINS CAR ROOFING COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

CAR-ROOF.

To all whom it may concern Be it known that I, F REDERIOK M. VHYTE, a citizen of the United States of America, residing at Tarrytown, in the county of Westchester and State of New York, have invented certain new and useful Improvements in Car-Roofs, of which the following is a specification, reference being had therein to the accompanying drawing.

The invention relates to car-roofs of the flexible type and comprises the novel construction as hereinafter set forth.

In the drawings:

Figure 1 is a longitudinal section through a portion of the roof;

Fig. 2 is a cross section thereof;

My improved construction is designed to secure in a single structure the advantages of roofs of two different types,viz. outside roofs and single-course flexible metallic roofs. With the former type the roof frame is overlaid with boards and the Weatherproofing is effected by light gage metallic sheets covering the boards and flexibly supported thereon, the joints between the sheets being weather-proofed by caps. With the second type the boards are omitted and heavy gage metallic sheets form both the load-sustaining and weather-proofing elements.

One objection which has been raised to the use of all metallic roofs is the condensation of moisture on the underside of the roof sheets and dripping on the contents of the car. This effect may be eliminated by the provision of a lining of heat insulating material and one ofthe advantages of the outside roof is that the roof boards form such a lining. Another advantage of the outside roof is that lighter gage metal may be used, but this is offset by the necessity'of a complete underlying board roof used to sustain the load.

With the present construction the advantage of both types are retained and their disadvantages eliminated,-first, by the use of relatively light gage metal plates for forming the weather-proof structure; second, by supporting these sheets upon spaced boards which overlie the roof frame and which furnish the necessary load support at less cost and with greater flexibility than with the continuous boards of the outside Specification of Letters Patent.

.space formed by the gain.

Patented Mar. 8, 1921.

Serial No. 205,777.

roof. My improved structure also guards against condensation by the placing of heat insulation intermediate the metal and the boards, and the saving effected by reduction in the gage of the metal and by the omission of boards reduces the cost to less than that of either of the previous types above referred to.

In detail, A are the carlines, which as shown are of inverted channel section having laterally-extending foot flanges, and B are purlins, shown as formed of wood'secured to the underside of the carlines. It is usual in the construction of the singlecourse, all-metal roofs to gain the purlins so as to depress the flanges of the carlines and to support the metal plates on the one alone with their side portions overhanging the This permits of clamping the weather-proofing caps on the extensions of the sheets, thereby forming a resilient and yielding bearing, permitting flexing of the roof and maintaining a weather-proof joint. With the present construction the gaining of the purlins may be omitted and instead of directly resting the sheets upon the purlins thin boards C are laid transversely of the purlins and form the supports for the sheets.- These boards are spaced from each other, the Width of the spaces being restricted to that which may be safely spanned by the light gage metal plates. D is a sheet of heat insulating material, such as felting, laid over the boards C between carlines, and preferably secured by nailing to the edges of the boards adjicent to the carlines, as indicated at E.

pon this covering material is placed a light gage metal sheet F, the marginal portions G of which are preferably raised to a higher game and terminate in upstanding flanges I are metal caps embracing the carlines and having foot-flanges J WhlCh rest upon the portions (:r of the sheet, being clamped down by suitable means, such as the bolt K.

movable over the supporting boards and arev of spaced members overlying the purlins' and extending transversely thereof intermediate carlines, and a roofing sheet supported on said spaced members. 7

2. In acar-roof, the combination with a roof frame, comprising carlines and purlins,

of roofing boards extending transversely of the purlins intermediate carlines, said boards being spaced from each other, a heat insulating sheet overlying said boards and a metallic weather-proofing sheet resting on said heat insulating sheet.

8. In a car-roof, the combination with a roof frame comprising carlines and purlins, of roofing boards extending transversely of the purlins intermediate carlines and spaced from each other, light-gage metallic sheets supported on said roof boards, and caps embracing the carlines and engaging said sheets to Weather-proof the joints therebetween.

4. In a car-roof, the combination with purlins, of carlines arranged above said purlins and prox'ide-d with laterally-extending foot flanges, roofing boards extending transversely across said purlins above the same and spaced from each other, and a metallic roofing sheet supported on said roofing boards with its marginal portions projecting beyond said boards and above the flanges of the carlines and caps embracing the carlines and resting upon the marginal portions of said roofing sheet.

5. In a car roof, the combination with a roof frame including purlins and carlines provided with foot flanges resting upon the purlins, of roofing boards overlying the purlins and extending transversely thereof intermediate the carlines, light gage metallic sheets supported on said roofing boards and having marginalportions extending above the foot flanges of the carlinesand out of contact therewith and weatherproofing means embracing the carlines and resting upon the marginal portions of the roofing sheets.

In testimony whereof I affix my signature.

FREDERICK M. XVHYTE. 

